Hello. in the face of ever-increasing SPAM where spam_modules and captcha have failed me, I'm wondering if comment validation by email might be the answer? Does Drupal have this feature or has anyone considered developing such a feature? An example would be engadget.com. I leave a comment there and the website informs me "please visit your email inbox to validate your comment". In my email inbox I click a link and am sent to the comments page where I had originally left the comment, except now it shows up. In addition to "Stronger" validation and decreased script abuse, this puts more information about my website in your inbox (the email) and increases the chance you'll visit my website again.

Initially I didn't like this validation and think weblogsinc could do more to inform the user about what to do, but as a website owner, I like the viral marketing aspect of this style of comment valiation.

Any info?